Coupling of spin and angular momentum of light in plasmonic vortex.
Opt Express
; 20(9): 10083-94, 2012 Apr 23.
Article
in En
| MEDLINE
| ID: mdl-22535099
ABSTRACT
We present that two distinct optical properties of light, the spin angular momentum (SAM) and the orbital angular momentum (OAM), can be coupled in the plasmonic vortex. If a plasmonic vortex lens (PVL) is illuminated by the helical vector beam (HVB) with the SAM and OAM, then those distinct angular momenta contribute to the generation of the plasmonic vortex together. The analytical model reveals that the total topological charge of the generated plasmonic vortex is given by a linear summation of those of the SAM and OAM, as well as the geometric charge of the PVL. The generation of the plasmonic vortex and the manipulation of the fractional topological charge are also presented.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Scattering, Radiation
/
Surface Plasmon Resonance
/
Light
/
Models, Theoretical
Language:
En
Journal:
Opt Express
Journal subject:
OFTALMOLOGIA
Year:
2012
Document type:
Article
Affiliation country:
Corea del Sur